How do identify what year my engine is?

Yeah, your kickdown linkage is all out of whack. You need the correct 4bbl parts to make it work correctly, or, you need to modify the ones you have to be like the 4bbl parts. Your accelerator cable bracket is wrong too and the cable itself is routed incorrectly. You want the linkage to go straight forward and not at an angle. You're also missing the washer that goes between the hairpin and the slotted front link at the carb end. Without that washer, the clip can pop off.